Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Safety education at iron mines of lake superior region
Review of safety educational methods of 11 companies in Lake Superior district; examples of safety cards, distributed monthly; course of studies in safety at township schools.
Safety education at iron mines of lake superior region
Review of safety educational methods of 11 companies in Lake Superior district; examples of safety cards, distributed monthly; course of studies in safety at township schools.
Safety education at iron mines of lake superior region
U. S. Bur. Mines -- Information Cir
Crawford, F.S. (Autor:in)
1931
15 pages
Report
Englisch
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